brake pad

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brake pad

The mechanic replaces the worn brake pad on the car.

Definition

Noun A component of a disc brake system. It is a flat piece of friction material, typically housed within a metal backing plate (called a shoe), that is pressed against a rotating brake disc (rotor) to create the friction necessary to slow or stop a vehicle.

Usage

The term "brake pad" refers specifically to the replaceable friction component in a disc brake assembly. It is a consumable part that wears down with use. * Mechanics recommend checking your brake pads during every tire rotation. * The most common symptom of worn brake pads is a high-pitched squealing noise. * This model of car uses ceramic brake pads for better performance.

Advanced Usage
  • Brake pad wear sensor: A device, often a small electronic clip embedded in the pad material, that triggers a warning light on the dashboard when the pad is nearly worn out.
    • The dashboard warning light came on because the brake pad wear sensor was activated.
  • Brake pad compound/material: Refers to the specific formulation of the friction material, such as organic, semi-metallic, or ceramic.
    • Choosing the right brake pad compound depends on your driving style and vehicle type.
Variants and Related Words
  • Brake shoe (n): A similar component used in drum brake systems, where the friction material is curved and presses outward against the inside of a brake drum. (Note: This is a related but distinct part from a brake pad).
  • Brake disc / Rotor (n): The flat, circular metal disc that the brake pad clamps onto to create friction.
  • Caliper (n): The assembly that houses the brake pads and uses hydraulic pressure to squeeze them against the rotor.
Synonyms
  • Friction pad: A more general engineering term for a pad designed to create friction.
  • Disc pad: A less common, abbreviated synonym.
Related Phrases
  • To change/replace the brake pads: The standard phrase for the maintenance action.
    • It's time to replace the brake pads on my car.
  • Brake pad life: Refers to how long a set of pads is expected to last under normal driving conditions.
    • Aggressive driving significantly reduces brake pad life.*
brake pad

The mechanic replaces the worn brake pad on the car.

Noun
  1. one of the pads that apply friction to both sides of the brake disk